The new developing trend of PVC and assistant for PVC-U profile for door and window is introduced, meanwhile, the choosing of raw materials and formulation design are discussed.

介绍了挤出PVC-U门窗异型材用树脂及助剂的最新开发动态，并对原料选用、配方设计进行了探讨。

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Under hot and wet condition, the mildew corrosion results in the color-changing of PVC-U profile, and oil stains and UV rays can accelerate mildew reaction which will aggravate color-changing.

指出PV C U异型材变色是在高温、潮湿的条件下因霉菌侵蚀所致，油污和紫外线会促进霉变使PV C U异型材变色更加严重。

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A further complication is that people's spending profile after retirement tends to be U-shaped.

更加复杂的问题在于：退休后人们的消费概况倾向于一个U型曲线。

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California has high-profile races for governor and the U.S.senate.

VOA: standard.2010.06.08

Contrast this with how a high-profile U.S. politician's temper is covered across the pond.

FORBES: Magazine Article

One of the world's best tennis players lost Wednesday to a guy who just weeks ago was driving himself eight hours to play in low-profile U.S. tournaments.

WSJ: Brian Baker: Tennis Comeback Just Got Sweeter

Schmidt, who is the highest-profile U.S. business executive to visit North Korea since leader Kim Jong Un took power a year ago, has not spoken publicly about the reasons behind the journey to North Korea.

NPR: AP Exclusive: Richardson Pressing NKorean Test Ban